Slushing grease



- Patented Max-.10, 19 1 i 'A rENr OFFICE,

' Lama 11. amen r1, or crrrcaeo rumors, assrenon. 'ro s'rlmnazan on. content,

- or wmrme, mmxiu, a coaroaarron or nmrum .snrisame'emsn Io Drawing.

v I The present invention relates to improvements in slushing greases; that 1s, to greases,

' which, on application to iron andjsteel sur-.

faces, effectively prevent rusting for long pe- 5 riods of time when exposed tothe action of water, saltwater and the like.

In accordance with'the present invention,

a mixture is made of a high melting point wax, such as Montamwax, carnauba wax, or compounds derived by the saponification of such waxes, and an'oil soluble sulfonic compound derived from the treatment of heavy ydrocarbon'oils with stron sulfuric acid (66 Baum or fuming acid%, the sulfonic compounds being present in proportions of from to 60%.

v In general, it is found convenient or advisable to add greater or less quantities of hydrocarbon oils,-s'uch. as straw oil or lu- 20 bricating oil. It is to be understood, however, that the oil may be omitted or may be used many suitable proportions to secure the consistency desired in the final materlal.

As an example of a composition made in i accordance with my invention, a slushinggrease has been made containing'20% Montan wax, 40% sodium salts of sulfonic com-.

pounds derived from the treatment of hea petroleum or lubricant oils with sulfurlc ac1 and of oil. Such a grease is found to remain in a thick film on an iron or steel surface, even though allowed to drip for several hours in a temperature around 150 F the resulting film resisting salt water spray forupwards of five days without permitting the formation of rust on the iron or steel surface. Instead of the sodium sulfonates, the sulfonic acid compounds themselves or other salts may be used, and instead carnauba wax, or other high melt point wax may be employed. Such waxes have melting points of abo'ut140 F; or higher. Highly resistant greases may be prepared by using less quantities of the sulfonic compound and:

' a denser material may be prepared by eliminating a greater or less proportion of the constituents required in such a grease are of the Montan'wax, sodium montanite, or

oil. It hasbeen found that the essential Application fled ma a, 1925. serial m. 12,799.

the heavy wax and'the sulfonic compounds hereinbefore referred to.

I claim: p

1. A slushing grease comprising a wax having a melting point not below that of Montan wax and sulfonic compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid.

2. A slushing grease comprising Montan wax and oil soluble sulfonic compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid.

3. A slushing grease comprising Montan wax with at least 20% of the oil soluble sulfonic compounds derived from the treatment offlhydrocarbon oils with strong sulfuric ac1 4. A slushing grease comprisin Montan wax, oil.soluble sulfonic compoun s derived from the treatment of hydrocarbon oils with strong sulfuric acid, and hydrocarbon oil.

5. A slushing grease comprising Montan wax, 20%, sodium soapsof sulfonic acid compounds derived from thetreatment of hydrocarbon oils with strong sulfuric acid and 40% of lubricating oil.

6. The mehod of preventing the corrosion and rusting of ferrous metallic surfaces which comprises applying to the surface a-film com rlsing Montan wax and oil soluble sulfomc compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid.

9. The method of preventing the corrosion and rusting of ferrous metallic surfaces which comprises applying to said surfaces a film comprising Montan wax with at least 20% of the oil soluble sulfonic compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid.

10. The method of preventing the corrosion and rusting of ferrous metallic surfaces which comprises applying to said surfaces a film comprising Montan wax, oil soluble sulfonic compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid, and hydrocarbon oil.

11. The method of preventing the corrosion and rusting of ferrous metallic surfaces which comprises applying to said surfaces a film comprising Montan wax, 20% sodium compounds of sulfonic acid compounds derived from the treatment of hydrocarbon oils with strong sulfuric acid, and 40% of lubricatlng oil.

ARTHUR H. BRANSKY. 

